AnEi

AnEi is name used to describe friendship of Hoshikawa Rei and Samuikaze Ran.

Summary
Despite beeing members of the same generation Rei and Ran weren't particulary close for years because Ran was always distant and cold towards her fellow members and never became close to any of them. Despite that Rei always was interested in Ran and wondered what was the reason she was so distant and didn't became friend with anyone.

The relationship between two of them began at Cupcake After Party that followed succession of Miyabi Honoka and Kashita Miyagi. Ran went outside to read a mail she got from her brother while Rei went to toilet. Two of them met each other and Rei started talking to her. Ran found her company surprisingly enjoying.

After that two of them slowly started to become close friends.

Trivia

 * Ran and Rei are often mixed up (in typos even by users that created them) due to having very similiar names (both start with R and are three letters long).